What is the filesystem in linux ~ Unix and Linux Filesystem in detail Hierarchy system

Unix and Linux Filesystem hierarchy system


Linux uses single rooted, inverted tree like file system hierarchy

Have you wondered why certain programs are located under /home, /bin, or /sbin, or /usr/bin, or /usr/sbin?

For example, less command is located under /usr/bin directory. Why not /bin, or /sbin, or /usr/sbin? What is the different between all these directories?